?Maths Formal Homework; Pls help will be getting assessed.? 5 Friends

have a piece of gossip each.? Maths Formal Homework; Pls help will be getting assessed.?
5 Friends have a piece of gossip each. They all want to share it with each other by text.
Texts can contain more hen one piece of gossip.
what is the fewest text messages needed so that all friends have every piece of gossip?
what about for other numbers of people, eg 6 Friends, 7 friends etc.
do you notice anything?


Can you predict what it would be for 100 friends?

What if the friends can have 2 way conversations on the phone instead?
What is the fewest phone calls needed?

Thankssss